Select all the true statements if AABC and ADEF are isosceles triangles.
1) The base angles of AABC are congruent to the base angles of ADEF.
2) Two sides of AABC are congruent.
3) Two angles of ADEF are congruent.
4) Two sides of AABC are congruent to two sides of ADEF.
5) AABC is congruent to ADEF.